Troubleshooting Flow Chart For Transmitter - Motorola Pro Series Elite Service Manual

VHF Troubleshooting Charts
Yes
1. Check Pin Diodes
2. Check Harmonic Filter
Inspect/Repair Tx. Output Net-
work
Is Power OK?
Yes
Done

Troubleshooting Flow Chart for Transmitter

Yes
No
Is Current OK?
No
Done
Done
START
No Power
No
Is There B+ Bias for
Ant switch
Is Control Voltage High
or Low
High
Check Drive to Mod-
ule
Is Drive OK?
Yes
Inspect PA Network/Check Power
Out of U3501 at Cap C3512
Is Power OK?
Yes
No
Replace U3501
Is Power OK?
Yes
No
Replace Q3501
Check Q3561
Low
Check PCIC
No
Troubleshoot VCO
3-13